In her travels across the ethereal plane, Iffy ended up unleashing something, something angry. That thing was Sekai, a remnant of the first race the gods made, the dragons. As the gods had unmade their physical forms instead of simply erasing them, they wandered freely across time and space, finding harmony in the cosmos. All except one.

Sekai was bitter and spiteful, both at the gods and the newer race that had replaced hers. Garnering the raw life energy of chi, she made herself a fearsome physical body, one similar to that of the typical Chinese dragons, and used its horrible power to wreak havoc on the god's latest creations. Unwilling to simply destroy her, but knowing she had to be stopped, they ensnared her in a dimensional fold, to live forever in isolation.

Iflyte ended up finding this dimensional fold, and accidentally reopened it, releasing its prisoner. Immediately absorbing and copying Iflyte's memories, including how to make a false shuu-kin body of her own, Sekai has resumed her attempts at destroying the lesser races by appearing in crucial points in history like Iflyte, and steering them for the worse. She is devious and cruel towards mortal beings, and takes great pleasure in infuriating her liberator with her tricks and plots. Her greater proficiency in chi manipulation affords her several abilities Iflyte has great trouble matching and as she cannot truly be killed or even halted, Sekai remains Iflyte's and mortal kind's greatest enemy.